Question

what are two types of progressive waves ? state two characteristics of progressive waves ​

Answer 1

Answer :

 progressive waves are characterised by crests and troughs.

What is crest?

• The point of maximum positive displacement is called a crest

what is trough?

• The maximum negative displacement is called a trough.

Answer 2

Explanation:

(f) Transverse progressive waves are characterised by crests and troughs. Longitudinal waves are characterised by compressions and rarefactions. (g) There is a transfer of energy across the medium in the direction of propagation of progressive wave.